Police searching apartment in Boston suburb after marathon bombings

In this image from video provided by WBZ TV, spectators and runners run from what was described as twin explosions that shook the finish line of the Boston Marathon, Monday, April 15, 2013, in Boston. Two explosions shattered the euphoria of the Boston Marathon finish line on Monday, sending authorities out on the course to carry off the injured while the stragglers were rerouted away from the smoking site of the blasts.

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BOSTON (AP) - Two explosions shattered the euphoria of the BostonMarathon finish line on Monday, sending authorities out on the course tocarry off the injured while the stragglers in the 26.2-mile trek fromHopkinton were rerouted away from the smoking site of the blasts.

Competitors and race organizers were crying as they fled the chaos.Bloody spectators were being carried to the medical tent that had beenset up to care for fatigued runners.

"There are a lot of people down," said one man, whose bib No. 17528identified him as Frank Deruyter of North Carolina. He was not injured,but marathon workers were carrying one woman, who did not appear to be arunner, to the medical area as blood gushed from her leg. A Bostonpolice officer was wheeled from the course with a leg injury that wasbleeding.

About three hours after the winners crossed the line, there was a loudexplosion on the north side of Boylston Street, just before the photobridge that marks the finish line. Another thunderous explosion could beheard a few seconds later.

Runner Laura McLean of Toronto said she heard two explosions outside themedical tent.

"There are people who are really, really bloody," McLean said. "Theywere pulling them into the medical tent."

Cherie Falgoust was waiting for her husband, who was running the race.

"I was expecting my husband any minute," she said. "I don't know whatthis building is ... it just blew. Just a big bomb, a loud boom, andthen glass everywhere. Something hit my head. I don't know what it was.I just ducked."